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76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
from __future__ import unicode_literals
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import unittest
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from datetime import date
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from infi.clickhouse_orm.database import Database
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from infi.clickhouse_orm.models import Model, NO_VALUE
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from infi.clickhouse_orm.fields import *
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from infi.clickhouse_orm.engines import *
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from infi.clickhouse_orm.funcs import F
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class MaterializedFieldsTest(unittest.TestCase):
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def setUp(self):
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self.database = Database('test-db', log_statements=True)
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self.database.create_table(ModelWithMaterializedFields)
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def tearDown(self):
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self.database.drop_database()
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def test_insert_and_select(self):
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instance = ModelWithMaterializedFields(
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date_time_field='2016-08-30 11:00:00',
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int_field=-10,
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str_field='TEST'
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)
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self.database.insert([instance])
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# We can't select * from table, as it doesn't select materialized and alias fields
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query = 'SELECT date_time_field, int_field, str_field, mat_int, mat_date, mat_str, mat_func' \
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' FROM $db.%s ORDER BY mat_date' % ModelWithMaterializedFields.table_name()
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for model_cls in (ModelWithMaterializedFields, None):
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results = list(self.database.select(query, model_cls))
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self.assertEqual(len(results), 1)
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self.assertEqual(results[0].date_time_field, instance.date_time_field)
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self.assertEqual(results[0].int_field, instance.int_field)
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self.assertEqual(results[0].str_field, instance.str_field)
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self.assertEqual(results[0].mat_int, abs(instance.int_field))
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self.assertEqual(results[0].mat_str, instance.str_field.lower())
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self.assertEqual(results[0].mat_date, instance.date_time_field.date())
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self.assertEqual(results[0].mat_func, instance.str_field.lower())
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def test_assignment_error(self):
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# I can't prevent assigning at all, in case db.select statements with model provided sets model fields.
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instance = ModelWithMaterializedFields()
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for value in ('x', [date.today()], ['aaa'], [None]):
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with self.assertRaises(ValueError):
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instance.mat_date = value
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def test_wrong_field(self):
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with self.assertRaises(AssertionError):
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StringField(materialized=123)
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def test_duplicate_default(self):
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with self.assertRaises(AssertionError):
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StringField(materialized='str_field', default='with default')
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with self.assertRaises(AssertionError):
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StringField(materialized='str_field', alias='str_field')
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def test_default_value(self):
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instance = ModelWithMaterializedFields()
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self.assertEqual(instance.mat_str, NO_VALUE)
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class ModelWithMaterializedFields(Model):
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int_field = Int32Field()
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date_time_field = DateTimeField()
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str_field = StringField()
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mat_str = StringField(materialized='lower(str_field)')
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mat_int = Int32Field(materialized='abs(int_field)')
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mat_date = DateField(materialized=u'toDate(date_time_field)')
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mat_func = StringField(materialized=F.lower(str_field))
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engine = MergeTree('mat_date', ('mat_date',))
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